Centrifugal separator.



l. MCL. MURPHY.

CENTRIFUGAL SEPARATOR.

APPLICATION HLED AUG. I4, 1912.

Patented July 13, 1915 a? In A .A

www...

separa-m1] the appz-u* AJ @muy millet tube 26 1P upper f "m the butt/0mof' Tal to be se@ .ply or ing o, from which it is drawn oil by thedischargepipe 7. As the material to be separated is continuously fedinto the separat ing bowl l2 the dried material remaining in the bowl,such as the sugar will rise above the `edge of inner bowl 20 and willbegin to drop inwardly over the edge thereof. The sepaiated materialwill continue to flow inwardly over the top edge of the bowl 2O untilfinally it gets in the path of the screw coiiveyer 23, and by thisconveyer it'will be drawn up through the outlet tube 26 and dischargedthrough the discharge pipe 28. By varying the speed of rotation of thefeed and delivery screws with reference to the speed of rotation of thebowl 12 the separating action can be varied to suit differentconditions, as may be desired.

It is evident that my invention is applicable not only to the separationof sugar but to separating moisture from any other material of a similarnature that may be found desirable.

I realize that considerable variation is possible in the details ofconstruction and arrangement of parts without departing from the spiritof my invention, and l therefore do not intend to limit myself to thespecilic form shown and described.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. A centrifugal. separator comprising a vertically disposed perforatedseparating bowl, means for rotating the bowl, a supeeding means leadingcentrally through the upper end of the bowl the bottom of said bowl, andmeans for conveying the treated material centrally from the said bowl ata point above its supply or feed point.

2. A. centrifugal separator comprising a vertically disposed, erforated,separating bowl, means for rotating the bowl, a central vertical screwconveyer for feeding the material to be treated into the bowl at a pointadjacent the bottom, a central outlet screwconveyer for receiving thetreated material above the point above where the material is fed intothe bowl.

3. A centrifugal separator comprising a rotary, vertically disposedseparating bowl, an inner concentricv outlet bowl of less height thanthe separating bowl to receive the treated material, means for feedingthe material to be treated into the separating bowl at a point adjacentthe bottom, and means,I for conveying the treated material fr'omth'einner outlet bowl. 4.-. A. centrifugal separator comprising a rotary,vertically disposed separating bowl curved inwardly toward its upperend, an inner concentric outlet bowl of less` height than the separatingbowl to receive the treated material, means for feeding the ma- 6 terialto be treated, into the separating bowl, at a point adjacent the bottom,and means for conveying the treated material from the ,inner outletbowl.

5. A centrifugal separator comprising a rotary, vertically-disposedseparating bowl, a central downwardly feeding screw conveyer leading tothe bottom of the bowl to supply the material to be treated, an innerconcentric outlet bowl of less height than the separating bowl andthrough which the feed conveyer extends, and an upwardly dischargingscrew conveyer extending upwardly from the bottom of the outlet bowl,and concentric with the feed conveyer.

6. A. centrifugal separator comprising a vertical, stationary outerbowl, an inner rtary separating bowl, and a stationary outlet bowlwithin and of less height than the separating bowl, a vertical screwconveyer E5 extending down centrally to a point near the bottom of theseparating bowl to supply 'the same with material to be treated, anoutlet screw conveyer concentric with the first conveyer and leadingupwardly from Athe 9G outlet bowl, a discharge leading laterally fromthe upper end of the outlet conveyer, and meansfor feeding the materialinto the upper end of the feeding conveyer.

7. ln a centrifugal separator', the combi- 95,

nation with a bowl, of means for driving the same, means for feedingmaterial to be separated to the bottom of the same, a second bowl,concentric with the lirst bowl, means for supporting said second bowl,and means` for delivering separated material from the bottom of saidsecond bowl'.

8. In a centrifugal separator, the combination with a bowl, of means fordriving the same, means for feeding material to be separated to thebottom of the" bowl, a second bowl concciitrically mountedwithin thefirst bowl, means for supporting`said`second bowl, and means fordelivering separated material from the bottom of saidsec- 11G ond bowl.

9. In a centrifugal separator, the combination with a bowl, of means fordriving the same, a screw conveyer for feeding material to be separatedto the bottom of the same,

a second bowl concentric with the rst bowl, means for supporting saidsecond bowl, and a second screw conveyer for delivering separatedmaterial from the bottom of said second bowl. 1'20 10. In a centrifugalseparator, the combination with a shaft, a bowl mounted on the shaft, ofmeans for driving the shaft to rotate the bowl, a screw conveyersurrounding the shaft and adapted to continuously feed the material tobe separated into the bowl,

'a tube surrounding the -screw conveyor, a In testimony wherebflalx mysignature econd bowl mlntexll on the tube within the in presence of twowitnesses. .y rst mentione ow a vscrew conve er vsurv rrounding the tubeand means for ydriving l MULEOD MURPHY 5 the last mentioned screwconveyor continu- Witnesses: I ously -to deliver material from thesecond GEO. S. LIvINesYToN, mentioned bowl. l K. E. Kim.

